Campbell Scientific PC400 Datalogger Support Software - Manual (Page 87)

Section 5. Split
hour/minute for day 92 starts at 9:30 a.m. The time between the start of the
day (0000) and 9:30 a.m. will be considered missing data. Blanks (or the
“Replace bad data with” text) and a carriage return line feed will be inserted at
the beginning of the PRN file for each “missed” output interval.
If you are working with two or more files, once Split starts processing the files
(based on the time of the first record of the first file), if no data exists for the
other file(s), blank data will be inserted.
If multiple input files are given specific starting times, Split starts the output at
the earliest specified starting time. In a PRN file, Blanks or the comment
entered in the “Replace bad data with” field are inserted for values from other
input files until their starting times are reached. In a RPT file only blanks are
used.
When using time synchronization with a mixed array data file,
with a midnight time stamp of 2400, you will need to select the
Other button, “Midnight at 2400 hours” checkbox. NOTE
5.3.1.15.1
5.3.1.15.2
Time Synchronization and the Copy Condition
To use the time synchronize function, time element(s) must be specified in the
Start Condition. The user must also specify a time interval in the Copy
condition. For instance, if the original data had 15 minute outputs and you
only want hourly outputs, then an interval of 60 minutes must be specified
following the element number. This is entered as (assuming hrmn is element
number 3) “3[60]”. If time synchronization is specified in the Start Condition,
Split looks for the interval in a time element in the Copy condition. Only one
time interval is specified. This interval is the unit of time to synchronize each
file.
The interval can be given tolerance limits by following the interval with a
comma and the tolerance. For example, if 3 is the hrmn element, and the time
interval is 60 minutes +/-2 minutes, the syntax is 3[60,2].
Table based data files need to use the same time format as described in Section
5.3.1.3, Start Condition. You can specify the interval for time synchronization
on table files as ::1[60]: which will give you an output interval of 60 minutes.
If the time synchronize function is enabled and data are missing at one or more
of the time intervals specified, then a blank (or the comment entered in the
“Replace bad data with” field) is output to the Output File. See TABLE 5-5.
Using Time Synchronization While Starting Relative to PC Time
Split tries to time-sync files to the top of the hour when starting relative to PC
time. If you are synchronizing files where the data output interval is not at the
top of the hour, you will need to specify an interval in the Copy Condition that
represents a window of time in which Split should look for the hour/minute.
For instance, if your data is output 50 minutes into a 60 minute interval (and
therefore, your time stamps are 50, 150, 250, 350...2350) your Start Condition
and Copy Conditions for the first file might look like the following:
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